<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
           
            <el-row :gutter="20">
                <el-col :span="8">
                     <!-- 搜索与添加区域 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>    
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>    
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <!-- scope.row可以获得这一行的数据值 -->
                        <!-- {{scope.row}} -->
                        <el-switch
                            v-model="scope.row.mg_state"
                            @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>    
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                         <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false" >
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                        
                    </template> 
                </el-table-column>
            </el-table>
              <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>

            <!-- 添加用户对话框 -->
            <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%"
                @close="addDialogClosed"
                >
                <!-- 内容主体区域 -->
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 修改用户对话框 -->
            <el-dialog
                title="修改用户"
                :visible.sync="editDialogVisible"
                width="50%"
                @close="editDialogClosed"
                >
                <!-- 内容主体区域 -->
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <!-- <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item> -->
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
            </el-dialog>

            <!-- 分配角色对话框 -->
            <el-dialog
                title="分配角色"
                :visible.sync="setRoleDialogVisible"
                width="50%"
                @close="setRoleDialogClosed"
                >
                <!-- 内容主体区域 -->
                <div>
                    <p>当前的用户：{{userInfo.username}}</p>
                    <p>当前的角色：{{userInfo.role_name}}</p>
                    <p>分配新的角色：
                          <el-select v-model="selectedRoleId" placeholder="请选择">
                            <el-option
                            v-for="item in rolesList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                            </el-option>
                        </el-select>
                    </p>
                </div>
                <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
                </span>
            </el-dialog>
        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        // 验证邮箱的规则
        var checkEmail = (rule,value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
            if(regEmail.test(value)) {
                // 合法的邮箱
                return cb()
            }
            cb(new Error("请输入合法的邮箱"))
        }
        // 验证手机号的规则
        var checkMobile = (rule,value, cb) => {
            // 验证手机号的正则表达式
            const reg = /^[1][3,4,5,7,8][0-9]{9}$/;
            if(reg.test(value)) {
                // 合法的手机号
                return cb()
            }
            cb(new Error("请输入合法的手机号"))
        }
        return {
            queryInfo: {
                query: '',
                // 当前页数
                pagenum:1,
                // 当前每页显示多少条
                pagesize:2
            },
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: "",
                password: "",
                email: "",
                mobile: ""
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名的长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    // { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                    { validator: checkEmail, trigger:'blur'}
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    // { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                    { validator: checkMobile, trigger:'blur'}
                ]
            },
            // 修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息
            editForm: {},
            // 修改表单的验证规则对象
            editFormRules:{
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    // { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                    { validator: checkEmail, trigger:'blur'}
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    // { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                    { validator: checkMobile, trigger:'blur'}
                ]
            },
            // 分配角色对话框
            setRoleDialogVisible: false,
            // 需要分配权限的用户
            userInfo: {},
            rolesList: [],
            // 已选中的角色id值
            selectedRoleId: ''
        }
    },
    created(){
        this.getUserList();
    },
    methods: {
        async getUserList(){
            const {data: res} = await this.$http.get('users', { params: this.queryInfo})
            console.log(res)
            if(res.meta.status !== 200) return this.$message.error("获取用户列表失败！")
            this.userlist = res.data.users;
            this.total = res.data.total;
        },
        // 监听pagesize改变的
        handleSizeChange(newSize){
            console.log(newSize)
            this.queryInfo.pagesize = newSize;
            this.getUserList();
        },
        // 监听第几个页面数
        handleCurrentChange(newPage){
            console.log(newPage)
            this.queryInfo.pagenum = newPage;
            this.getUserList();
        },
        // 监听switch开关状态
        async userStateChanged(userInfo){
            console.log(userInfo)
            const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
            if(res.meta.status !== 200){
                this.userInfo.mg_state = ! this.userInfo.mg_state
                return this.$message.error("更新用户状态失败")
            }
            this.$message.success("更新用户状态成功")
        },
        // 监听添加用户对话框关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid => {
                if(!valid) return;
                // 通过校验则可以发起请求
                const {data: res} = await this.$http.post('users', this.addForm)
                if(res.meta.status !== 201){
                    
                    return this.$message.error("添加用户失败")
                }
                this.$message.success("添加用户成功")
                // 隐藏对话框
                this.addDialogVisible = false;
                this.getUserList();
            })
        },
        // 展示用户编辑对话框
        async showEditDialog(id){
            // console.log(id)
            const {data: res} = await this.$http.get('users/'+ id)
                if(res.meta.status !== 200){
                    
                    return this.$message.error("查询用户失败")
                }
                this.$message.success("查询用户成功")
            this.editForm = res.data;
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRules.resetFields();

        },
        // 修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return;
                // 通过校验则可以发起请求
                const {data: res} = await this.$http.put('users/'+this.editForm.id, {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })
                if(res.meta.status !== 200){
                    
                    return this.$message.error("修改用户失败")
                }
                this.$message.success("修改用户成功")
                // 隐藏对话框
                this.editDialogVisible = false;
                this.getUserList();
            })
        },
        // 根据id删除用户
        removeUserById(id){
            // console.log(id)
            // 询问是否删除
            this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(async () => {
                const {data: res} = await this.$http.delete('users/'+id)
                if(res.meta.status !==200){
                    return this.$message.error("删除用户失败")
                }
                this.$message({
                    type: 'success',
                    message: '删除成功!'
            });
                this.getUserList();
            }).catch(() => {
                this.$message({
                    type: 'info',
                    message: '已取消删除'
            });          
            });
        },
        // 展示分配角色的对话框i
        async setRole(userInfo){
            this.userInfo = userInfo

            // 在展示对话框之前要获得所有角色列表
            const {data: res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error("获取角色列表失败！")
            }else{
                this.rolesList = res.data
            }
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error("请选择要分配的角色")
            }else{
                const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
                if(res.meta.status !== 200){
                    return this.$message.error("更新角色失败")
                }
                this.$message.success("更新角色成功！")
                this.getUserList()
            }
            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style scoped>

</style>